2101211212011 has 8 divisors (see below), whose sum is σ = 2801628716544. Its totient is φ = 1400800591080.

The previous prime is 2101211212007. The next prime is 2101211212019. The reversal of 2101211212011 is 1102121121012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2101211212011 - 2² = 2101211212007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101211212019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960675 + ... + 2263916.

It is an arithmetic number, because the mean of its divisors is an integer number (350203589568).

Almost surely, 2^{2101211212011} is an apocalyptic number.

2101211212011 is a deficient number, since it is larger than the sum of its proper divisors (700417504533).

2101211212011 is a wasteful number, since it uses less digits than its factorization.

2101211212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441801.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2101211212011 its reverse (1102121121012), we get a palindrome (3203332333023).

Subtracting from 2101211212011 its reverse (1102121121012), we obtain a palindrome (999090090999).

The spelling of 2101211212011 in words is "two trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, eleven".